If you need help, never be afraid to ask. If it's not urgent, use the link in the menu to request help.
Never keep all of your eggs in one basket, and don't put your computer files in a basket either. Save important documents often (train yourself to press Ctrl+S every minute or so), and save the most important files to at least two separate locations. Example: save it to a USB thumb drive, your U drive on campus, and/or your hard drive on your computer. If this confuses you, feel free to ask for assistance at the Computer Services office.
Never use floppy disks. Just don't.
As mentioned before, a good way to have a backup of your files is to save them on a USB thumb drive. They are much more reliable than a floppy disk, they hold incomparable amounts more data, and they are relatively cheap. They can be purchased at the campus bookstore.
The labs can be used anytime classes are not in session. Go ahead, make yourself at home (but remember to follow the rules).
File-sharing networks, such as Bearshare, Kazaa and Limewire, etc... are a drain on the college's internet resources. More importantly, it is not legal to download music you do not own (or have a license for). Don't download illegally, and don't share your music illegally. Doing so is a grounds for suspension from DCC.